Queue and Stack behavior in C Sharp (C#) - Mini Project: Build & Apply

Queue and Stack behavior

📖 Scenario: Imagine you are managing a line of customers waiting for service and a pile of books to be processed. You will use a queue to represent the line (first come, first served) and a stack to represent the pile of books (last in, first out).

🎯 Goal: You will create a queue and a stack, add some items to each, then remove items to see how the order changes based on queue and stack behavior.

📋 What You'll Learn

Create a queue of strings called customerQueue with these customers in order: "Alice", "Bob", "Charlie"

Create a stack of strings called bookStack with these books in order: "Book1", "Book2", "Book3"

Dequeue one customer from customerQueue and pop one book from bookStack

Print the dequeued customer and popped book

💡 Why This Matters

🌍 Real World

Queues are used in real life to manage lines, like customers waiting at a store. Stacks are used when you need to reverse order, like undo actions or processing recent items first.

💼 Career

Understanding queues and stacks is important for programming jobs because these data structures help solve many problems involving order and processing sequences.

1

Create the queue and stack with initial items

Create a Queue<string> called customerQueue and add "Alice", "Bob", and "Charlie" in that order. Also create a Stack<string> called bookStack and add "Book1", "Book2", and "Book3" in that order.

C Sharp (C#)

// Your code here

Need a hint?

Use Enqueue to add items to the queue and Push to add items to the stack.

2

Create variables to hold removed items

Create two string variables: servedCustomer and processedBook to hold the items you will remove from the queue and stack.

C Sharp (C#)

using System.Collections.Generic;

Queue customerQueue = new Queue();
customerQueue.Enqueue("Alice");
customerQueue.Enqueue("Bob");
customerQueue.Enqueue("Charlie");

Stack bookStack = new Stack();
bookStack.Push("Book1");
bookStack.Push("Book2");
bookStack.Push("Book3");

// Your code here

Need a hint?

Just declare two string variables to hold the removed items.

3

Remove one item from the queue and stack

Remove one customer from customerQueue using Dequeue() and assign it to servedCustomer. Remove one book from bookStack using Pop() and assign it to processedBook.

C Sharp (C#)

using System.Collections.Generic;

Queue customerQueue = new Queue();
customerQueue.Enqueue("Alice");
customerQueue.Enqueue("Bob");
customerQueue.Enqueue("Charlie");

Stack bookStack = new Stack();
bookStack.Push("Book1");
bookStack.Push("Book2");
bookStack.Push("Book3");

string servedCustomer;
string processedBook;

// Your code here

Need a hint?

Use Dequeue() to remove from the queue and Pop() to remove from the stack.

4

Print the removed items

Print the values of servedCustomer and processedBook using two separate Console.WriteLine statements.

C Sharp (C#)

using System.Collections.Generic;

Queue customerQueue = new Queue();
customerQueue.Enqueue("Alice");
customerQueue.Enqueue("Bob");
customerQueue.Enqueue("Charlie");

Stack bookStack = new Stack();
bookStack.Push("Book1");
bookStack.Push("Book2");
bookStack.Push("Book3");

string servedCustomer;
string processedBook;

servedCustomer = customerQueue.Dequeue();
processedBook = bookStack.Pop();

// Your code here

Need a hint?

Use Console.WriteLine(servedCustomer) and Console.WriteLine(processedBook) to show the removed items.